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There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is 3 8 . There are 18 red marbles in the bag and each is equally likely to be chosen. Work out how many marbles in total there must be.

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Answer:

There are 48 marbles in the bag

Step-by-step explanation:

red: blue : total

3                   8

there are 18 red

18/3 = 6

Multiply everything by 6

3*6                 8*6

18                    48

There are 48 marbles in the bag

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